Improvement in feed-water heaters



A. CARPENTER.

FEED-WATER HEATER.

No. 185,893. Patented Jan. 2, 1877.

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UN TED STATEs PATENT QFFIOE.

ALLAN CARPENTER, OF NEW YORK, N. Y.

IMPROVEMENT IN FEED-WATER HEATERS.

Specification forming part of Letters Patent No. 185,893, dated January 2, 1877: applicatio filed December 8, 1876.

To all whom it may concern:

Be it known that I, ALLAN CARPENTER, of the city, county, and State of New York, have invented a new and useful Improvement in Feed-VVater Heaters for Steam-Boilers; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing, which forms part of this specification.

This invention consists in a feed-water heat er for steam-boilers, composed of a hollow water-base, which is divided by a space or passage into separate boxes, and is constructed with ducts or tubes up through the latter, and with upper arched or bent water-tubes, connecting at their lower ends, respectively, with said boxes, inlet, and outlet pipes in communication with said boxes, and a steamdome and smoke-stack within which and the smoke-box connected therewith the water-base and water circulating tubes mounted on it are arranged, substantially as hereinafter described.

Figure 1 represents a vertical longitudinal section of a marine-boiler, in part, having my improved feed-water heater applied thereto. Fig. 2 is a transverse vertical section of the same on the line 1 y, and Fig. 3 a horizontal section thereof on the line to :20.

A is the body of the boiler; B, its furnace; (J, the ash-pit, and D D smoke flues connecting the furnace B with a forward smoke-box, E. G is the steam-dome, and H the smokestack, within which latter or steam-dome portion thereof and smoke-box E the remaining portions of the feed-water heater are arranged. These consist in part of a hollow water-base, which may be of circular form, and is intersected or bisected vertically by means of a passage, b, to form independent boxes I I. This passage 11 serves to provide for the circulation of the smoke and products of coinbustion through the water-base as well as around it, and said independent boxes I I are furthermore provided with ducts or tubes d d through them for the same purpose. Mounted on the hollow water-base are a series of upper arched or bent wa ter-circulating pipes or tubes, J J, the lower ends of which communicate, respectively, with the boxes I I of the base, which latter, by its tubular and divided or separated construction, as provided for by the passage 1) and tubes d, not only exposes an extended heating-area, but facilitate or promote the circulation of the smoke and products of combustion between or among and around the bent tubes J J. The independent boxes I I of the water-base have connected with them, respectively, inlet and outlet pipes f, for the water to and from the heater.

A water-heater for steam-boilers, as described, combines a large and efficient heatingsurface with simplicity and ready accessibility in case of necessary repair.

I claim The hollow water-base composed of independent boxes I 1, divided by a space or passage, b, and provided with tubes or ducts d, arranged to pass up through said boxes, in combination with the arched or bent watertubes J, the inlet and outlet pipes ff, the

steam-dome G, the smoke-box E, and smokestack H, the whole being arranged substantially as described.

ALLAN CARPENTER.

Witnesses BENJAMIN W. HOFFMAN, LoUIs BARBE. 

